EP3631169A1 - Vane pump or compressor - Google Patents

Vane pump or compressor

Info

Publication number
EP3631169A1
EP3631169A1 EP18725458.6A EP18725458A EP3631169A1 EP 3631169 A1 EP3631169 A1 EP 3631169A1 EP 18725458 A EP18725458 A EP 18725458A EP 3631169 A1 EP3631169 A1 EP 3631169A1
Authority
EP
European Patent Office
Prior art keywords
wall
braking
recess
vane pump
blocking
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP18725458.6A
Other languages
German (de)
French (fr)
Other versions
EP3631169B1 (en
Inventor
Stefan Haar
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saeta GmbH and Co KG
Original Assignee
Saeta GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Saeta GmbH and Co KG filed Critical Saeta GmbH and Co KG
Publication of EP3631169A1 publication Critical patent/EP3631169A1/en
Application granted granted Critical
Publication of EP3631169B1 publication Critical patent/EP3631169B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
    • F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F04C2/3441—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/08—Rotary pistons
    • F01C21/0809—Construction of vanes or vane holders
    • F01C21/0881—Construction of vanes or vane holders the vanes consisting of two or more parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/06—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations specially adapted for stopping, starting, idling or no-load operation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/28—Safety arrangements; Monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/19—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2251/00—Material properties
    • F05C2251/04—Thermal properties
    • F05C2251/042—Expansivity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2251/00—Material properties
    • F05C2251/08—Shape memory

Definitions

  • the invention relates to a vane pump or compressor according to claim 1.
  • thermostats which turn off the pump when reaching a certain temperature. Such shutdown is not easily accomplished with an arrangement of such a pump on a vehicle (e.g., tanker).
  • the control must also have a minimum requirement for functional safety, in particular on a thermal protection contactor for explosion protection.
  • the invention has for its object to provide a vane pump, which is safely protected during operation against overheating.
  • At least one braking or blocking element is arranged in the wings or in the walls of the recesses, which cooperates between a braking or blocking position in which it form or force fluid with the wall of the recess or the wing and a release position, in which the wings can move freely in the recesses, is movable, wherein the braking and blocking element can be brought from a predetermined temperature in the braking or blocking position. This is done with a heat-stretching substance or a ticarldehnemden metal.
  • the wings are prevented from emerging from the recesses. They can therefore not engage with the wall of the cylinder chamber and bring about no increase in temperature even in dry running. If the temperature drops back to an acceptable level, the vane pump can continue to operate as before. Especially control and shutdown can therefore unfold, because the overtemperature protection acts only mechanically.
  • a bimetallic spring is arranged fixed in a recess of the wing or the wall of the recess, such that exits from a predetermined temperature in the cylinder chamber or in the engine, an end portion of the bimetallic laterally from the wings or the wall and blocking or braking with the wall or the wings engages.
  • a blocking recess is formed into which engages in the blocking position of the end portion.
  • the blocking recess is formed in the wall of the recesses.
  • a brake element closes a lateral pocket in the wings or in the wall of the recesses, which is filled with an expanding material.
  • the brake element can be designed as a lid of a bag which closes the bag and is welded, for example.
  • the brake element can also be designed as a kind of piston, which is acted upon by the expansion material.
  • Fig. 1 shows very schematically a cross section through a vane pump according to the invention.
  • Fig. 2 shows the same view as Fig. 1, but in the blocking state of
  • Fig. 3 shows schematically a wing of the vane pump after the
  • Fig. 4 shows a cut away in the bimetallic spring of FIG. 3 part of the remaining wing.
  • Fig. 5 shows again very schematically a cross section through a vane pump according to the invention in another embodiment.
  • FIG. 6 shows the section of a vane of the vane pump according to FIG. 5.
  • Fig. 7 shows a section through the wing of FIG. 6 in the region of a
  • Blocking or braking elements Blocking or braking elements.
  • the vane pump according to FIGS. 1 and 2 has a housing 10, in which a cylindrical pump chamber 12 is arranged.
  • a rotor 14 In the pump chamber, a rotor 14 is arranged with an axis of rotation eccentric to the pump chamber 12.
  • wings 18 are arranged radially movable.
  • bimetallic springs 22 In recesses 20 of the wings bimetallic springs 22 are arranged with a bent end portion 24.
  • a blocking recess 26 is formed in the lower region.
  • the vanes 18 are urged outwards by centrifugal force against the cylinder wall of the pump chamber 12, the contour of which determines the position of the vanes 18 relative to their recess 16. This is well known.
  • the hook-shaped end portion 24 of the bimetallic springs is within the contour of the wings 18 so that they can move freely.
  • the bimetallic springs are attached at 28 to the wing, for example by riveting, as shown schematically.
  • the end portion 24 has hooked into the blocking recess 26, so that the wings 18 are held in their recesses 16. This hooking occurs when the bimetallic spring 22 deforms due to an increase in temperature over a predetermined value. As a result, the vane pump pumps no longer and a temperature rise is prevented.
  • FIGs 3 and 4 the back of the wings 18 is shown, with the attachment of the leaf-shaped bimetallic spring 22.
  • the plastic wings 18 have spaced apart on the back ribs 36.
  • the upper end of the bimetallic spring 22 is riveted approximately centrally. It extends with its lower portion through a recess on the back of the wings 18 (see in particular Fig. 4).
  • Vanes 18a which are movable in the radial recesses 16, differ from the vanes 18 in that a pocket 40, which is filled with an expanding material 42, is formed approximately centrally near its upper end.
  • the bag is closed by an elastically deformable cover 44.
  • the expansion material 42 expands, whereby the wings are clamped in the recesses 16. As a result, the pump stops pumping so that a rise in temperature is prevented.
  • a blocking element such as the hook 24 of a bimetallic spring can be actuated, which then expands upon expansion of the expansion material with a recess, such as the recess 26 in FIGS. 1 and 2, interacts.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)

Abstract

The invention relates to a vane pump or compressor, comprising a housing in which a rotor is mounted such that it rotates about an axis of rotation, and vanes that are movably arranged in radial recesses of the rotor, the vane ends opposite the bottom of the recess interacting with the wall of a cylindrical chamber in the housing under the action of a centrifugal force, the axis of rotation being eccentric to the axis of the cylindrical chamber and the cylindrical chamber comprising a suction channel and a pressure channel. At least one braking or locking element is arranged in the vanes or in the wall of the recesses, said braking or locking element being movable between a locking position or braking position, in which it can interact positively or non-positively with the wall of the recess or the vane, and a release position in which the vane moves freely in the recess. From a pre-defined temperature, the braking or locking element can be brought into the braking or locking position by heat expansion of the element or an additional expanding object.

Description

Flügelzellenpumpe oder -kompressor  Vane pump or compressor
Die Erfindung bezieht sich auf eine Flügelzellenpumpe oder -kompressor nach Anspruch 1. The invention relates to a vane pump or compressor according to claim 1.
Wenn Flügelzellenpumpen trockenlaufen oder gegen geschlossene oder stark gedrosselte Schieber pumpen, entwickeln sie naturgemäß Wärme, die bis zu einem Brand führen kann. Als Schutz gegenüber Druck sind Überdruckventile bekannt, die den Druck gesteuert auf nahezu Null absenken können. Hierfür ist in der Regel Druckluft erforderlich, die auf Fahrzeugen nicht immer verfügbar ist. Außerdem können Steuerungen für die Schieber manipuliert sein oder wegen fehlender Wartung versagen. When vane pumps run dry or pump against closed or heavily throttled valves, they naturally generate heat that can cause fire. As protection against pressure overpressure valves are known, which can lower the pressure controlled to almost zero. This usually requires compressed air, which is not always available on vehicles. In addition, controls for the gate valves may be manipulated or fail due to lack of maintenance.
Eine Überdrucksicherung hilft nicht gegen ein Trockenlaufen der Pumpe. Es ist bekannt, hierfür Thermostate zu verwenden, die bei Erreichen einer bestimmten Temperatur die Pumpe abschalten. Ein derartiges Abschalten ist bei einer Anordnung einer derartigen Pumpe auf einem Fahrzeug (z.B. Tankfahrzeug) nicht beliebig einfach zu bewerkstelligen. Außerdem muss auch hierfür die Steuerung eine Mindestanforderung an funktionaler Sicherheit aufweisen, insbesondere auf einem Überheizungs schütz für den Explosionsschutz.. An overpressure protection does not help against running dry the pump. It is known to use for this purpose thermostats, which turn off the pump when reaching a certain temperature. Such shutdown is not easily accomplished with an arrangement of such a pump on a vehicle (e.g., tanker). In addition, the control must also have a minimum requirement for functional safety, in particular on a thermal protection contactor for explosion protection.
Der Erfindung liegt die Aufgabe zugrunde, eine Flügelzellenpumpe zu schaffen, die im Betrieb sicher gegen Überhitzung geschützt ist. The invention has for its object to provide a vane pump, which is safely protected during operation against overheating.
Diese Aufgabe wird durch die Merkmale des Anspruchs 1 gelöst. This object is solved by the features of claim 1.
Bei der erfindungs gemäßen Flügelzellenpumpe ist in den Flügeln oder in den Wandungen der Ausnehmungen mindestens ein Brems- oder Blockierelement angeordnet, das zwischen einer Brems- oder Blockierposition, in der es form- oder kraftflüssig mit der Wandung der Ausnehmung oder dem Flügel zusammenwirkt und einer Freigabeposition, in der die Flügel sich frei in den Ausnehmungen bewegen können, bewegbar ist, wobei das Brems- und Blockierelement ab einer vorgegebenen Temperatur in die Brems- oder Blockierposition bringbar ist. Dies geschieht mit einem unter Wärme dehnenden Stoff oder einem wärmedehnemden Metall. In the inventive vane pump, at least one braking or blocking element is arranged in the wings or in the walls of the recesses, which cooperates between a braking or blocking position in which it form or force fluid with the wall of the recess or the wing and a release position, in which the wings can move freely in the recesses, is movable, wherein the braking and blocking element can be brought from a predetermined temperature in the braking or blocking position. This is done with a heat-stretching substance or a wärldehnemden metal.
Bei der erfindungsgemäßen Flügelzellenpumpe ist durch eine konstruktiv einfache Maßnahme gewährleistet, dass ab einer vorgegebenen Temperatur die Flügel daran gehindert werden, aus den Ausnehmungen herauszutreten. Sie können daher nicht mit der Wandung des Zylinderraums in Eingriff treten und auch bei Trockenlauf keine Temperaturerhöhung bewerkstelligen. Sinkt die Temperatur wieder auf einen annehmbaren Wert zurück, kann die Flügelzellenpumpe wie bisher weiterbetrieben werden. Besonders Steuerungs- und Abschaltvorgänge können daher entfalten, weil der Übertemperaturschutz ausschließlich mechanisch wirkt. In the vane pump according to the invention is ensured by a structurally simple measure that from a predetermined temperature, the wings are prevented from emerging from the recesses. They can therefore not engage with the wall of the cylinder chamber and bring about no increase in temperature even in dry running. If the temperature drops back to an acceptable level, the vane pump can continue to operate as before. Especially control and shutdown can therefore unfold, because the overtemperature protection acts only mechanically.
Nach einer Ausgestaltung der Erfindung ist vorgesehen, dass eine Bimetallfeder in einer Ausnehmung der Flügel oder der Wandung der Ausnehmung fixiert angeordnet ist, derart, dass ab einer vorgegebenen Temperatur im Zylinderraum bzw. im Motor ein Endabschnitt der Bimetallfeder seitlich aus den Flügeln oder der Wandung austritt und blockierend oder bremsend mit der Wandung bzw. den Flügeln in Eingriff tritt. According to one embodiment of the invention, it is provided that a bimetallic spring is arranged fixed in a recess of the wing or the wall of the recess, such that exits from a predetermined temperature in the cylinder chamber or in the engine, an end portion of the bimetallic laterally from the wings or the wall and blocking or braking with the wall or the wings engages.
Vorzugsweise ist in der Wandung der Ausnehmung oder seitlich in den Flügeln eine Blockieraussparung geformt, in die in der Blockierposition der Endabschnitt eingreift. Vorzugsweise ist die Blockieraussparung in der Wandung der Ausnehmungen geformt. Eine Bimetallfeder in einer Wandausnehmung anzuordnen ist aufwendiger als im Flügel. Nach einer weiteren Ausgestaltung der Erfindung ist vorgesehen, dass ein Bremselement eine seitliche Tasche in den Flügeln oder in der Wandung der Ausnehmungen verschließt, die mit einem Dehnstoff gefüllt ist. Das Bremselement kann als Deckel einer Tasche ausgeführt werden, der die Tasche verschließt und zum Beispiel eingeschweißt ist. Alternativ kann das Bremselement auch als eine Art Kolben ausgeführt werden, der vom Dehnstoff beaufschlagt wird. Preferably, in the wall of the recess or laterally in the wings a blocking recess is formed into which engages in the blocking position of the end portion. Preferably, the blocking recess is formed in the wall of the recesses. To arrange a bimetallic spring in a wall recess is more complicated than in the wing. According to a further embodiment of the invention, it is provided that a brake element closes a lateral pocket in the wings or in the wall of the recesses, which is filled with an expanding material. The brake element can be designed as a lid of a bag which closes the bag and is welded, for example. Alternatively, the brake element can also be designed as a kind of piston, which is acted upon by the expansion material.
Ausführungsbeispiele der Erfindung werden nachfolgend anhand von Zeichnungen näher erläutert. Embodiments of the invention will be explained in more detail with reference to drawings.
Fig. 1 zeigt äußerst schematisch einen Querschnitt durch eine Flügelzellenpumpe nach der Erfindung. Fig. 1 shows very schematically a cross section through a vane pump according to the invention.
Fig. 2 zeigt die gleiche Ansicht wie Fig. 1, jedoch im Blockierzustand der  Fig. 2 shows the same view as Fig. 1, but in the blocking state of
Flügel.  Wing.
Fig. 3 zeigt schematisch einen Flügel der Flügelzellenpumpe nach den  Fig. 3 shows schematically a wing of the vane pump after the
Figuren 1 und 2 mit einer Bimetallfeder.  Figures 1 and 2 with a bimetallic spring.
Fig. 4 zeigt einen im Bereich der Bimetallfeder nach Fig. 3 weggeschnittenen Teil des übrigen Flügels.  Fig. 4 shows a cut away in the bimetallic spring of FIG. 3 part of the remaining wing.
Fig. 5 zeigt wiederum äußerst schematisch einen Querschnitt durch eine erfindungsgemäße Flügelzellenpumpe in einer anderen Ausführungsform.  Fig. 5 shows again very schematically a cross section through a vane pump according to the invention in another embodiment.
Fig. 6 zeigt den Abschnitt eines Flügels der Flügelzellenpumpe nach Fig. 5. FIG. 6 shows the section of a vane of the vane pump according to FIG. 5.
Fig. 7 zeigt einen Schnitt durch den Flügel nach Fig. 6 im Bereich eines Fig. 7 shows a section through the wing of FIG. 6 in the region of a
Blockier- bzw. Bremselements.  Blocking or braking elements.
Die Flügelzellenpumpe nach den Fig. 1 und 2 weist ein Gehäuse 10 auf, in dem ein zylindrischer Pumpenraum 12 angeordnet ist. Im Pumpenraum ist ein Rotor 14 angeordnet mit einer Drehachse exzentrisch zum Pumpenraum 12. In vier um 90° versetzten radialen Ausnehmungen 16 sind Flügel 18 radial beweglich angeordnet. In Ausnehmungen 20 der Flügel sind Bimetallfedern 22 angeordnet mit einem abgebogenen Endabschnitt 24. In der Wandung der Ausnehmungen 16 ist im unteren Bereich eine Blockieraussparung 26 geformt. The vane pump according to FIGS. 1 and 2 has a housing 10, in which a cylindrical pump chamber 12 is arranged. In the pump chamber, a rotor 14 is arranged with an axis of rotation eccentric to the pump chamber 12. In four by 90 ° staggered radial recesses 16 wings 18 are arranged radially movable. In recesses 20 of the wings bimetallic springs 22 are arranged with a bent end portion 24. In the wall of the recesses 16, a blocking recess 26 is formed in the lower region.
Im Betrieb werden die Flügel 18 durch Zentrifugalkraft nach außen gedrückt gegen die Zylinderwandung des Pumpenraums 12, dessen Kontur die Lage der Flügel 18 relativ zu ihrer Ausnehmung 16 bestimmt. Dies ist allgemein bekannt. Im Betrieb befindet sich der hakenförmige Endabschnitt 24 der Bimetallfedern innerhalb der Kontur der Flügel 18, sodass diese sich frei bewegen können. Die Bimetallfedern sind bei 28 am Flügel befestigt, beispielsweise durch Nieten, wie schematisch dargestellt ist. Nur der Vollständigkeit halber sei auf den Saugkanal 30 und den Druckkanal 32 der Pumpe hingewiesen. In operation, the vanes 18 are urged outwards by centrifugal force against the cylinder wall of the pump chamber 12, the contour of which determines the position of the vanes 18 relative to their recess 16. This is well known. In operation, the hook-shaped end portion 24 of the bimetallic springs is within the contour of the wings 18 so that they can move freely. The bimetallic springs are attached at 28 to the wing, for example by riveting, as shown schematically. For the sake of completeness, reference is made to the suction channel 30 and the pressure channel 32 of the pump.
Wie in Fig. 2 dargestellt, hat sich der Endabschnitt 24 in die Blockieraussparung 26 eingehakt, sodass die Flügel 18 in ihren Ausnehmungen 16 festgehalten sind. Dieses Einhaken geschieht, wenn durch Temperaturerhöhung über einen vorgegebenen Wert die Bimetallfeder 22 sich verformt. Dadurch pumpt die Flügelzellenpumpe nicht mehr und ein Temperaturanstieg wird verhindert. As shown in Fig. 2, the end portion 24 has hooked into the blocking recess 26, so that the wings 18 are held in their recesses 16. This hooking occurs when the bimetallic spring 22 deforms due to an increase in temperature over a predetermined value. As a result, the vane pump pumps no longer and a temperature rise is prevented.
In den Figuren 3 und 4 ist die Rückseite der Flügel 18 gezeigt, mit der Anbringung der blattförmigen Bimetallfeder 22. Die aus Kunststoff bestehenden Flügel 18 weisen an der Rückseite beabstandete Rippen 36 auf. In den Abschnitten zwischen den Rippen 36 ist annähernd mittig das obere Ende der Bimetallfeder 22 angenietet. Sie erstreckt sich mit ihrem unteren Abschnitt durch eine Ausnehmung an der Rückseite der Flügel 18 (siehe insbesondere Fig. 4). Soweit bei der Darstellung in Fig. 5 gleiche Teile wie bei der Ausformungsform nach den Figuren 1 und 2 verwendet werden, werden die gleichen Bezugszeichen eingesetzt. Flügel 18a, die in den radialen Ausnehmungen 16 beweglich sind, unterscheiden sich von den Flügeln 18 dadurch, dass annähernd mittig nahe ihrem oberen Ende eine Tasche 40 geformt ist, die mit einem Dehnstoff 42 gefüllt ist. Die Tasche wird von einem elastisch verformbaren Deckel 44 verschlossen. In Figures 3 and 4, the back of the wings 18 is shown, with the attachment of the leaf-shaped bimetallic spring 22. The plastic wings 18 have spaced apart on the back ribs 36. In the sections between the ribs 36, the upper end of the bimetallic spring 22 is riveted approximately centrally. It extends with its lower portion through a recess on the back of the wings 18 (see in particular Fig. 4). As far as the same parts as in the embodiment of Figures 1 and 2 are used in the illustration in Fig. 5, the same reference numerals are used. Vanes 18a, which are movable in the radial recesses 16, differ from the vanes 18 in that a pocket 40, which is filled with an expanding material 42, is formed approximately centrally near its upper end. The bag is closed by an elastically deformable cover 44.
Ab einer vorgegebenen Temperatur dehnt sich der Dehnstoff 42 aus, wodurch die Flügel in den Ausnehmungen 16 festgeklemmt werden. Dadurch pumpt die Pumpe nicht mehr, sodass ein Temperaturanstieg verhindert wird. From a predetermined temperature, the expansion material 42 expands, whereby the wings are clamped in the recesses 16. As a result, the pump stops pumping so that a rise in temperature is prevented.
Lediglich der Vollständigkeit halber sei darauf hingewiesen, dass mit Hilfe von Dehnstoff auch ein Sperrelement, wie der Haken 24 einer Bimetallfeder betätigt werden kann, der bei Ausdehnung des Dehnstoffs dann mit einer Ausnehmung, wie etwa der Ausnehmung 26 in den Fig. 1 und 2, zusammenwirkt. Only for the sake of completeness it should be pointed out that with the aid of expansion material, a blocking element, such as the hook 24 of a bimetallic spring can be actuated, which then expands upon expansion of the expansion material with a recess, such as the recess 26 in FIGS. 1 and 2, interacts.

Claims

Ansprüche: Claims:
1. Flügelzellenpumpe oder -kompressor, mit einem Gehäuse, in dem ein Rotor um eine Drehachse drehbar gelagert ist, in radialen Ausnehmungen des Rotors verschiebbar angeordnete Flügel, deren vom Boden der Ausnehmung entgegengesetzte Enden mit der Wandung eines Zylinderraums im Gehäuse unter Einwirkung von Zentrifugalkraft zusammenwirken, wobei die Drehachse zur Achse des Zylinderraums exzentrisch ist und der Zylinderraum einen Ansaug- und einen Druckkanal aufweist, dadurch gekennzeichnet, dass in den Flügeln (18, 18a) oder in der Wandung der Ausnehmungen mindestens ein Brems- oder Blockierelement angeordnet ist, das zwischen einer Blockier- oder Bremsposition, in der es form- oder kraftschlüssig mit der Wandung der Ausnehmung oder dem Flügel zusammenwirkt und einer Freigabeposition, in der die Flügel sie frei in der Ausnehmung bewegen können, bewegbar ist und das Brems- oder Blockierelement ab einer vorgegebenen Temperatur durch Wärmedehnung des Elements oder eines zusätzlichen Dehngegenstands in die Brems- oder Blockierposition bringbar ist. 1. vane pump or compressor, comprising a housing in which a rotor is rotatably mounted about a rotation axis, slidably disposed in radial recesses of the rotor vanes whose opposite ends of the bottom of the recess cooperate with the wall of a cylinder chamber in the housing under the action of centrifugal force , wherein the axis of rotation is eccentric to the axis of the cylinder space and the cylinder chamber has a suction and a pressure channel, characterized in that in the wings (18, 18a) or in the wall of the recesses at least one braking or blocking element is arranged between a blocking or braking position in which it cooperates positively or non-positively with the wall of the recess or the wing and a release position in which the wings can move freely in the recess, and the braking or blocking element from a predetermined temperature by thermal expansion of the element or in addition En Dehngegenstands in the braking or blocking position can be brought.
2. Flügelzellenpumpe nach Anspruch 1, dadurch gekennzeichnet, dass eine Bimetallfeder (22) in einer Ausnehmung der Flügel (18) oder der Wandung der Ausnehmungen fixiert angeordnet ist, derart, dass ab einer vorgegebenen Temperatur im Zylinderraum bzw. im Rotor ein Endabschnitt (24) der Bimetallfeder (22) seitlich aus dem Flügel (18) oder der Wandung austritt und blockierend oder bremsend mit der Wandung bzw. der Flügel in Eingriff tritt. 2. vane pump according to claim 1, characterized in that a bimetallic spring (22) is arranged fixed in a recess of the wings (18) or the wall of the recesses, such that from a predetermined temperature in the cylinder chamber or in the rotor, an end portion (24 ) of the bimetallic spring (22) emerges laterally from the wing (18) or the wall and engages blocking or braking with the wall or the wing engages.
3. Flügelzellenpumpe nach Anspruch 1 und 2, dadurch gekennzeichnet, dass in der Wandung der Ausnehmung oder seitlich in den Flügeln eine Blockieraussparung (26) geformt ist, in die in der Blockierposition der Endabschnitt (24) eingreift. 3. vane pump according to claim 1 and 2, characterized in that in the wall of the recess or laterally in the wings a blocking recess (26) is formed, into which engages in the blocking position of the end portion (24).
4. Flügelzellenpumpe nach Anspruch 1, dadurch gekennzeichnet, dass ein Bremselement seitlich eine Tasche (40) im Flügel oder in der Wandung der Ausnehmungen verschließt, die mit Dehnstoff (42) gefüllt ist. 4. vane pump according to claim 1, characterized in that a braking element laterally closes a pocket (40) in the wing or in the wall of the recesses, which is filled with expanding material (42).
5. Flügelzellenpumpe nach Anspruch 4, dadurch gekennzeichnet, dass das Bremselement ein elastisch verformbarer auswölbbarer Deckel (44) ist. 5. vane pump according to claim 4, characterized in that the braking element is an elastically deformable Auswölbbarer cover (44).
6. Flügelzellenpumpe nach Anspruch 5, dadurch gekennzeichnet, dass der Deckel (44) in dem Flügel (18a) oder die Wandung eingeschweißt ist. 6. vane pump according to claim 5, characterized in that the cover (44) in the wing (18 a) or the wall is welded.
7. Flügelzellenpumpe nach Anspruch 1, dadurch gekennzeichnet, dass das Bremselement ein Kolben ist, der einen mit Dehnstoff gefüllten Zylinder abschließt. 7. vane pump according to claim 1, characterized in that the braking element is a piston which closes a cylinder filled with expansion material.
EP18725458.6A 2017-05-23 2018-05-14 Vane pump or compressor Active EP3631169B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202017103110.1U DE202017103110U1 (en) 2017-05-23 2017-05-23 Vane pump or compressor
PCT/EP2018/062378 WO2018215230A1 (en) 2017-05-23 2018-05-14 Vane pump or compressor

Publications (2)

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EP3631169A1 true EP3631169A1 (en) 2020-04-08
EP3631169B1 EP3631169B1 (en) 2021-03-17

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EP (1) EP3631169B1 (en)
DE (1) DE202017103110U1 (en)
ES (1) ES2876937T3 (en)
WO (1) WO2018215230A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109826789A (en) * 2019-02-21 2019-05-31 徐顺利 A kind of energy conservation adjustable vane pump

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1451879A1 (en) * 1964-12-10 1969-07-10 Zuendapp Werke Gmbh Sealing strip for rotary piston engines
US4472119A (en) * 1983-06-30 1984-09-18 Borg-Warner Corporation Capacity control for rotary compressor
DE19651413C1 (en) * 1996-12-11 1998-06-25 Peter Dipl Ing Geus Vane compressor for hot gas
JP5289433B2 (en) * 2008-05-19 2013-09-11 パナソニック株式会社 Two-stage rotary expander, expander-integrated compressor, and refrigeration cycle apparatus
JP5438587B2 (en) * 2010-04-16 2014-03-12 株式会社山田製作所 Impeller in water pump
CN102817834A (en) * 2012-08-22 2012-12-12 浙江台州先顶液压有限公司 Hydraulic vane pump
DE202013000976U1 (en) * 2013-02-01 2014-05-08 Saeta Gmbh & Co. Kg Wing for a vane device and vane device

Also Published As

Publication number Publication date
EP3631169B1 (en) 2021-03-17
WO2018215230A1 (en) 2018-11-29
DE202017103110U1 (en) 2018-08-24
ES2876937T3 (en) 2021-11-15

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